Journal
PHYSICAL REVIEW A
Volume 105, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.105.042817
Keywords
-
Categories
Funding
- Okinawa Institute of Science and Technology (OIST) Graduate University
- Japan Society for the Promotion of Science (JSPS) [19K05316, 20K03795]
- Russian Science Foundation [21-72-10107]
- Priority 2030 Federal Academic Leadership Program
- Grants-in-Aid for Scientific Research [19K05316, 20K03795] Funding Source: KAKEN
- Russian Science Foundation [21-72-10107] Funding Source: Russian Science Foundation
Ask authors/readers for more resources
This study investigates the Casimir-Polder potential of a multilevel alkali-metal atom near an optical nanofiber. The potential of low-lying excited states can be positive and repulsive in certain regions of atom-to-surface distances. The study also calculates the nanofiber-induced shifts of the transition frequencies of the atomic rubidium D-2 and D-1 lines.
We study the Casimir-Polder potential of a multilevel alkali-metal atom near an optical nanofiber. We calculate the mean potential of the atom in a fine-structure state. We perform numerical calculations for the Casimir-Polder potentials of the ground state and a few low-lying excited states of a rubidium atom. We show that, unlike the potential of the ground state, which is negative and attractive, the potential of a low-lying excited state may take positive values, oscillate around the zero value with a decaying amplitude, and become repulsive in some regions of atom-to-surface distances. We observe that, for a nanofiber with a radius of 200 nm, the potential for the state 8S(1/2) of a rubidium atom achieves a positive peak value of about 17 mu K at a distance of about 150 nm from the fiber surface and becomes strongly repulsive in the region of distances from 150 to 400 nm. We also calculate the nanofiber-induced shifts of the transition frequencies of the atomic rubidium D-2 and D-1 lines. We find that the shifts are negative in the region of short distances, become positive, and oscillate around the zero value with a decaying amplitude in the region of large distances.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available